Hi Josh, Thanks for the advice. On balance, I would prefer to stick with Ubuntu 18.04 and roll back GNU Radio to version to 3.8. I'm running some fairly "experimental" (i.e. fragile) software applications on my laptop at the moment, and I am a bit nervous about breaking them with an OS upgrade.
Normally I would never install anything from source, being a relatively inexperienced user. However, in this case I don't have much choice, as the Ettus USRP driver I am using (UHD v4.0) is not supported by the standard GNU Radio binaries. If you know of a way to install a GNU Radio binary that will let me use a USRP driver of my choosing, please let me know. Note that I am willing to switch to an older version of the USRP driver if it will help. However, regardless of which driver version I use, it will have to be built from source with the -DENABLE_PYTHON_API compiler flag set to ON (the default is OFF), as I require this API for my project. (The obvious alternative would be to import the GNU Radio library into my Python project, rather than the Ettus API. I don't have any experience with this, but I would be willing to give it a try.) Thanks, Brendan. On Wed, Apr 21, 2021 at 8:26 PM Josh Morman <[email protected]> wrote: > Brendan, > > If you are able to, I would recommend updating to Ubuntu 20.04 and then > using the ppa to install 3.9: > https://wiki.gnuradio.org/index.php/InstallingGR (from PPA section) > If you are stuck with 18.04, I would recommend dropping back to v3.8 and > follow the same instructions. > > If you must install from source, I have been able to build 3.9 on 18.04 > using these prerequisites (and then volk from source): > > https://github.com/mormj/gnuradio-docker/blob/maint-3.9/ubuntu/18.04/buildreqs.Dockerfile > > > Josh > > > On Wed, Apr 21, 2021 at 2:21 AM Brendan Horsfield < > [email protected]> wrote: > >> Hi Everyone, >> >> I have just finished installing GNU Radio 3.9.0.0 on my Ubuntu laptop, >> and I am having some difficulties getting it to work properly. It feels >> like I have missed a step, but I don't know what it could be. >> >> I installed GNU Radio by building it from source as per the instructions >> in https://wiki.gnuradio.org/index.php/InstallingGR#From_Source and >> https://wiki.gnuradio.org/index.php/UbuntuInstall#Install_the_Pre-Requisites >> (see below for details). The process seemed to go smoothly, with no errors >> reported. >> >> However, when I open a bash terminal and type "gnuradio-companion", I get >> the following warning messages: >> >> <<< Welcome to GNU Radio Companion 3.9.0.0 >>> >> Block paths: /usr/local/share/gnuradio/grc/blocks >> Loading: >> "/home/anyone/Documents/Brendan/GNU-Radio/GNR-Radio-3_9_0_0/test.grc" >> >>> Done >> Warning: restarting the docstring loader (crashed while loading >> 'qtgui_grbackground') >> Warning: restarting the docstring loader (crashed while loading >> 'qtgui_auto_correlator_sink') >> Warning: restarting the docstring loader (crashed while loading >> 'qtgui_bercurve_sink') >> Warning: restarting the docstring loader (crashed while loading >> 'qtgui_compass') >> Warning: restarting the docstring loader (crashed while loading >> 'qtgui_const_sink_x') >> Warning: docstring loader crashed too often >> >> GNU Radio Companion then opens up OK, but it won't run any flowgraphs, >> even very simple ones. It simply returns Code-11 each time, with no >> further information. >> >> Also, if I try to add any Instrumentation blocks (e.g. QT GUI Frequency >> Sink), the application shuts down immediately, and prints the message >> "Segmentation fault (core dumped)" to the terminal. >> >> Details of my equipment setup are as follows: >> >> HP Omen laptop >> Intel Core i7-8750H CPU @ 2.20GHz × 12 >> 32GB RAM >> Ubuntu 18.04.5 LTS >> >> Ettus B210 USRP >> UHD driver v4.0.0.0 with Python API enabled >> (USRP operation has been verified using Ettus examples and my own Python >> scripts.) >> >> GNU Radio Installation Process: >> 1. Install dependencies as per gnuradio wiki page, including pybind11 >> v2.6.2 and Volk v2.4.1 (both built from source) >> 2. Install GNU Radio as follows: >> mkdir workarea-gnuradio >> cd workarea-gnuradio >> git clone https://github.com/gnuradio/gnuradio.git >> cd gnuradio >> git checkout v3.9.0.0 >> mkdir build >> cd build >> cmake -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../ >> make -j8 >> make test (NOTE: THIS RETURNED A MESSAGE THAT "NO TESTS WERE FOUND") >> sudo make install >> sudo ldconfig >> Updated PYTHONPATH and LD_LIBRARY_PATH in $HOME/.bashrc file >> sudo ldconfig >> volk_profile >> Reboot laptop >> Open terminal, run "gnuradio-companion", make sad face. >> >> Has anyone encountered this problem before? Any assistance you can >> provide would be greatly appreciated! >> >> Thanks & Regards, >> Brendan. >> >> >>
